The Five-Factor Model Rating Form (FFMRF) is a one-page measure designed to provide an efficient assessment of the higher order domains of the Five Factor Model (FFM) as well as the more specific, lower order facets proposed by McCrae and Costa. Although previous research has suggested that the FFMRF’s assessment of the lower order facets converge reasonably with other FFM measures, the structural validity of the domain-level assessment has not yet been evaluated. The current study employed an exploratory structural equation modeling framework to investigate the fit of a five-factor solution within a combined sample of 757 participants. This was a novel analysis using a combined sample drawn from three previously published studies and was composed primarily of undergraduates but also included a smaller clinical subsample. Results indicated that the FFMRF is well accommodated within a five-factor solution. Furthermore, the FFMRF domain scores evinced large correlations with domain scores from the NEO Personality Inventory–Revised. The results suggest that the FFMRF might hold promise as a choice for those seeking a brief measure that provides a valid assessment of both the broad and specific traits of the FFM.